CN106505900A - A kind of arcless breaking inverter loop current suppressing method - Google Patents

A kind of arcless breaking inverter loop current suppressing method Download PDF

Info

Publication number
CN106505900A
CN106505900A CN201611205390.1A CN201611205390A CN106505900A CN 106505900 A CN106505900 A CN 106505900A CN 201611205390 A CN201611205390 A CN 201611205390A CN 106505900 A CN106505900 A CN 106505900A
Authority
CN
China
Prior art keywords
carrier phase
module
circulation
phase difference
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611205390.1A
Other languages
Chinese (zh)
Other versions
CN106505900B (en
Inventor
张学广
肖怡
李�瑞
韦甘
徐殿国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Institute of Technology
Original Assignee
Harbin Institute of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Institute of Technology filed Critical Harbin Institute of Technology
Priority to CN201611205390.1A priority Critical patent/CN106505900B/en
Publication of CN106505900A publication Critical patent/CN106505900A/en
Application granted granted Critical
Publication of CN106505900B publication Critical patent/CN106505900B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

A kind of arcless breaking inverter loop current suppressing method, the present invention relates to arcless breaking inverter loop current suppressing method.The present invention is in order to solve the problems, such as that prior art is the shortcoming relatively low based on practicality caused by idealized conditions.Step of the present invention is：Step one：According to the characteristic of arcless breaking inverter system circulation, impact of the carrier phase difference between parallel module to arcless breaking inverter system circulation is obtained, i.e. arcless breaking inverter system circulation is directly proportional to the carrier phase difference between parallel module；Step 2：According to impact of the carrier phase difference between the parallel module that step one is obtained to arcless breaking inverter system circulation, determine that two kinds adjust the method that carrier phase difference suppresses circulation, i.e. open loop scan method and closed loop control method.The present invention is used for technical field of electric power.

Description

A kind of arcless breaking inverter loop current suppressing method
Technical field
The present invention relates to arcless breaking inverter loop current suppressing method.
Background technology
Large Copacity inverter system is mainly by separate unit high-power inverter and two kinds of knots by small-power wired in parallel Structure is constituted.The production cost of separate unit high-power inverter is higher, and installs and overhaul certain difficulty.Multiple modules are simultaneously Connection can reduce the current stress that each module is born, and the flexibility of system and reliability are higher, therefore multiple inverter moulds Block parallel system is widely used.
In inverter parallel system, there is interconnection line parallelly connected reverse converter system due to the presence for having order wire, greatly limit The distance between parallel module is made while also have impact on the stability and reliability of system, therefore arcless breaking technology is obtained It is widely applied.Presence in arcless breaking system without order wire, parallel module carrier wave are asynchronous and without signal Interaction.As arcless breaking inverter system carrier wave is asynchronous, can be because there is phase difference and produce in system between carrier wave Raw circulation.
It is hard that carrier phase difference control method in correlation technique for arcless breaking system is all based on parallel module The identical agonic idealized conditions of part parameter, and the experimental facilities hardware parameter of reality will not be just the same, therefore real Relatively low with property.Suppress circulation so as to need the carrier phase difference of the asynchronous parallel system of the method regulation carrier wave of practicality.Below Described parallel system is all referring to arcless breaking inverter system.
Content of the invention
The invention aims to it is the shortcoming relatively low based on practicality caused by idealized conditions to solve prior art, And propose a kind of arcless breaking inverter loop current suppressing method.
A kind of arcless breaking inverter loop current suppressing method is comprised the following steps：
Step one：According to the characteristic of arcless breaking inverter system circulation, the carrier phase between parallel module is obtained Between impact of the difference to arcless breaking inverter system circulation, i.e. arcless breaking inverter system circulation and parallel module Carrier phase difference be directly proportional；
Step 2：According to the carrier phase difference between the parallel module that step one is obtained to arcless breaking inverter system The impact of circulation, determines that two kinds adjust the method that carrier phase difference suppresses circulation, i.e. open loop scan method and closed loop control method；
The open loop scan method is by carrying out 180 degree complete cycle by the carrier phase difference of two inverter parallel modules Phase shift, complete the scanning of a cycle, two module carrier phase differences calculated by continuously N number of intermittent scanning, adjustment is wherein The carrier phase of one module is so as to adjusting the phase difference of two module intercarriers；
Described closed loop control method is to adjust carrier phase difference by carrier phase adjuster, is obtained according to step one The relation that arcless breaking inverter system circulation is directly proportional to the carrier phase difference between parallel module, system circulation is passed through The carrier phase of carrier phase regulator feedback module in parallel module, the carrier phase difference between two parallel modules Instantaneously adjusted.
Beneficial effects of the present invention are：
It is an object of the invention to the carrier phase difference pair between analysis parallelly connected reverse converter system circulation characteristic and parallel module The impact of circulation, the circulation characteristic so as to be obtained according to analysis propose the carrier phase difference for adjusting multiple inverter parallel intermodules Method to suppress circulation.
The no control interconnection inverter parallel system circulation inhibition method of present invention design, using carrier wave between reduction parallel module The novel method of phase difference come suppress for due to carrier phase difference exist and produce circulation, fundamentally can suppress to be directed to The circulation produced due to the presence of carrier phase difference, and the inventive method does not rely on the Utopian parameter pair of parallel system Title condition, with very strong practicality.The inventive method can be phase-difference control within 10 degree.
Description of the drawings
Fig. 1 is the flow chart of arcless breaking inverter loop current suppressing method of the present invention；
Fig. 2 is a kind of parallelly connected reverse converter system structural representation disclosed in prior art；
Fig. 3 is two of the present invention and has dephased triangular carrier schematic diagram；
Fig. 4 is the flow chart that inverter parallel system open loop scanning of the present invention adjusts carrier phase difference method；
Fig. 5 is the carrier phase moving process schematic diagram of open loop scan method of the present invention；
Fig. 6 is the flow chart that inverter parallel system closed loop of the present invention adjusts carrier phase difference method.
Specific embodiment
Specific embodiment one：As shown in figure 1, a kind of arcless breaking inverter loop current suppressing method includes following step Suddenly：
Step one：According to the characteristic of arcless breaking inverter system circulation, the carrier phase between parallel module is obtained Between impact of the difference to arcless breaking inverter system circulation, i.e. arcless breaking inverter system circulation and parallel module Carrier phase difference be directly proportional；
Step 2：According to the carrier phase difference between the parallel module that step one is obtained to arcless breaking inverter system The impact of circulation, determines that two kinds adjust the method that carrier phase difference suppresses circulation, i.e. open loop scan method and closed loop control method；
The open loop scan method is by carrying out 180 degree complete cycle by the carrier phase difference of two inverter parallel modules Phase shift, complete the scanning of a cycle, two module carrier phase differences calculated by continuously N number of intermittent scanning, adjustment is wherein The carrier phase of one module is so as to adjusting the phase difference of two module intercarriers；
Described closed loop control method is to adjust carrier phase difference by carrier phase adjuster, is obtained according to step one The relation that arcless breaking inverter system circulation is directly proportional to the carrier phase difference between parallel module, system circulation is passed through The carrier phase of carrier phase regulator feedback module in parallel module, the carrier phase difference between two parallel modules Instantaneously adjusted.
It is an object of the invention to the carrier phase difference pair between analysis parallelly connected reverse converter system circulation characteristic and parallel module The impact of circulation, the circulation characteristic so as to be obtained according to analysis propose the carrier phase difference for adjusting multiple inverter parallel intermodules Method to suppress circulation.
According to an aspect of the present invention, by the carrier phase difference of consideration shunt chopper intermodule, circulation is obtained Expression formula.Thus, by circulation expression formula Fourier decomposition, the composition of circulation can be analyzed, so as to analyze the characteristic of circulation With impact of the carrier phase difference to circulation.
According to a further aspect in the invention, the carrier phase difference method of adjustment of shunt chopper intermodule, including：Open loop is swept Retouch method and closed loop control method.The open loop scan method is by carrying out the carrier phase difference of two inverter parallel modules The phase shift of 180 degree complete cycle, realizes the scanning of a cycle, calculates two modules by continuously N number of intermittent scanning process Carrier phase difference, adjusts the carrier phase of one of module so as to adjusting the phase difference of two module intercarriers.Described closes Ring control method is by carrier phase adjuster regulation carrier phase difference, the circulation characteristic obtained according to analysis and carrier phase Impact of the difference to circulation, can learn the relation of circulation size and carrier phase difference, therefore by system circulation through carrier phase The carrier phase of regulator feedback module in parallel system, so as to carry out the carrier phase difference between two parallel modules Instantaneous regulation.
Specific embodiment two：Present embodiment from unlike specific embodiment one：Obtain simultaneously in the step one The detailed process of the impact of the carrier phase difference to arcless breaking inverter system circulation of connection intermodule is：
A kind of existing parallelly connected reverse converter system structural representation, in figure e are given as shown in Figure 2aebecRespectively A, B, The line voltage of C three-phases；The system adopts general DC busbar structure.The system is based on L wave filters, by two inversions in parallel Device module is constituted.
As shown in figure 3, the triangular carrier for two parallel modules.Wherein θ is the phase difference between triangular carrier, u1, u2 It is the carrier waveform of two modules respectively.
It is analyzed using space vector width pulse modulation method (SVPWM), it is considered to the carrier phase difference θ between parallel module, Obtained by calculating, circulation constitutes i by three partsc'=ic1+ic2+ic3：
Wherein Part I is fundamental wave sine circulation：
Wherein described UdFor the voltage of DC side, M is modulation ratio, and module of the parallel module for shunt chopper, including mould Block 1 and module 2, the constant module of carrier phase are referred to as module 1, and the module that carrier phase is conditioned is referred to as module 2；L1For module 1 inductance value, L2Inductance value for module 2；wcFor carrier angular frequencies, wsFor the angular frequency of fundamental wave, t is the time；
Part II is triangular wave circulation that frequency is three times fundamental frequency：
Wherein described k1For integer；
Part III is that waveform is approximately square wave, circulation of the frequency for switching frequency：
Each several part circulation is carried out to be added after Fourier decomposition and is obtained circulation expression formula and is：
Circulation expression formula during using other modulator approaches, obtained by carrying out to each several part circulation after Fourier decomposition addition Identical with above formula, so the circulation i for obtainingcFinal expression formula is applicable for use with the situation of any modulator approach.
By to circulation expression formula ic' be analyzed, obtain the circulation of the parallelly connected reverse converter system of consideration carrier phase difference There is feature：The circulation size of each frequency component and phase difference θ, DC voltage UdIt is directly proportional, with loop circuit impedance L1+L2And carrier wave Angular frequency wcIt is inversely proportional to；
Each several part circulation is added after carrying out Fourier decomposition and obtains circulation icBy DC component and carrier frequency and its frequency multiplication Secondary AC compounent composition, the size of circulation are directly proportional to carrier phase difference θ, the carrier phase difference size between two parallel modules The size of each circulation, arcless breaking inverter system circulation is affected to be directly proportional to the carrier phase difference between parallel module, Therefore the size of system circulation can reflect the size of carrier phase difference indirectly.
Other steps and parameter are identical with specific embodiment one.
Specific embodiment three：Present embodiment from unlike specific embodiment one or two：As shown in figure 4, described In step 2, the detailed process of open loop scan method is：
The starting time of the inverter module of two no control interconnections is inconsistent, and carrier wave has phase difference.For the two moulds Block, carrier phase difference cannot be measured, so the present invention proposes to keep the carrier phase of one of module constant, adjustment is another An outer module carrier phase, to reach the method for adjusting carrier phase difference purpose.Module constant for carrier phase is referred to as mould Block 1, the module that carrier phase is conditioned are referred to as module 2.
Step 2 one：Start inverter module in parallel, i.e. module 1 and module 2；
Module 1 and module 2 are independent control, start when different, and therefore carrier wave is asynchronous, with phase difference；
Step 2 two：The carrier phase of holding module 1 is constant, and the carrier phase of mobile module 2, until the carrier wave of module 2 Phase place differs 180 degree with its raw carrier phase, records the waveform of circulation in carrier phase moving process；
Wherein, carrier phase movement is moved for constant speed, i.e. each moment moves fixed angle to same direction, such as Fig. 5 institutes Show, during the carrier phase movement 180 degree of module 2, the carrier phase difference of module 1 and module 2 is with carrier phase Movement first diminishes and becomes big again；
The shadow of carrier phase difference between parallel module to arcless breaking inverter system circulation is obtained according to step one Ring, during carrier phase difference changes, system circulation first diminished and become big again with same Long-term change trend, this process Referred to as scan；
Step 2 three：The corresponding carrier phase amount of movement of minimum carrier phase difference in a scan period is found out, described Process of one scan period for the carrier phase movement 180 degree of module 2；
The shadow of carrier phase difference between parallel module to arcless breaking inverter system circulation is obtained according to step one Ring, when carrier phase difference is minimum, circulation is also minimum, therefore in a scan period, the circulation minimal instant of record is and carries Wave phase difference minimal instant；
After control system collection circulation value, the instance sample is calculated and the n-1 common n ring for obtaining of sampling before the moment The variance and quadratic sum of flow valuve, finds n circulation value variance and quadratic sum minimum moment, i.e. carrier phase difference according to bubbling method The minimum moment；By translational speed and the carrier phase difference minimal instant of 2 carrier phase of module, calculate corresponding carrier phase and move Momentum；
Step 2 four：Scan N number of cycle, 2 two to step 2 three of repeat step；Wherein N is the integer more than 1；
Step 2 five：Calculate the corresponding carrier phase amount of movement mean value of circulation minimal instant that N number of scan period obtains；
Step 2 six：After N number of intermittent scanning terminates, by the carrier phase of module 2 on the basis of its raw carrier phase On, the carrier phase amount of movement mean value that mobile computing is obtained.
Other steps and parameter are identical with specific embodiment one or two.
Specific embodiment four：Unlike one of present embodiment and specific embodiment one to three：As shown in fig. 6, In the step 2, the detailed process of closed loop control method is：
Step 2 (1)：Start inverter module in parallel, i.e. module 1 and module 2；
Module 1 and module 2 are independent control, start when different, and therefore carrier wave is asynchronous, with phase difference；
Step 2 (2)：Acquisition system circulation, signal is through carrier phase adjuster；The carrier phase adjuster is adjusted for P Section device or pi regulator；
For carrier phase adjuster, circulation set-point are ic_ref, the absolute value for the circulation for collecting is input into, is exported For carrier phase amount of movement；
Step 2 (3)：The carrier phase amount of movement that carrier phase adjuster is exported is fed back to module 2, mobile module 2 Carrier phase；
When carrier phase adjuster selects P adjusters, the absolute value signal of circulation is compared with set-point ic_ref, if poor It is worth for just, outgoing carrier phase shift momentum is on the occasion of then the carrier phase of module 2 is moved to positive direction, and carrier phase difference reduces； If difference is negative, outgoing carrier phase shift momentum is negative value, then the carrier phase of module 2 is moved to negative direction, carrier phase difference Increase.
System circulation changes near circulation set-point ic_ref, changes circulation set-point and can adjust circulation size.Root According to the impact of circulation characteristic and carrier phase difference to circulation, this method can adjust carrier phase difference size.
One of other steps and parameter and specific embodiment one to three are identical.

Claims (4)

1. a kind of arcless breaking inverter loop current suppressing method, it is characterised in that：The arcless breaking inverter ring Stream suppressing method is comprised the following steps：
Step one：According to the characteristic of arcless breaking inverter system circulation, the carrier phase difference pair between parallel module is obtained Load between the impact of arcless breaking inverter system circulation, i.e. arcless breaking inverter system circulation and parallel module Wave phase difference is directly proportional；
Step 2：According to the carrier phase difference between the parallel module that step one is obtained to arcless breaking inverter system circulation Impact, determine that two kinds adjust the methods that carrier phase differences suppress circulation, i.e. open loop scan method and closed loop control method；
The open loop scan method is by the carrier phase difference of two inverter parallel modules to be carried out the phase of 180 degree complete cycle Move, complete the scanning of a cycle, two module carrier phase differences are calculated by continuously N number of intermittent scanning, one of them is adjusted The carrier phase of module is so as to adjusting the phase difference of two module intercarriers；
Described closed loop control method be by carrier phase adjuster adjust carrier phase difference, according to step one obtain without mutual The relation that on line parallelly connected reverse converter system circulation is directly proportional to the carrier phase difference between parallel module, by system circulation through carrier wave Phase regulator feeds back to the carrier phase of a module in parallel module, and the carrier phase difference between two parallel modules is carried out Instantaneous regulation.
2. a kind of arcless breaking inverter loop current suppressing method according to claim 1, it is characterised in that：The step The detailed process of impact of the carrier phase difference between parallel module to arcless breaking inverter system circulation is obtained in rapid one For：
It is analyzed using space vector carrier modulating method, it is considered to the carrier phase difference θ between parallel module, ring obtained by calculating Stream constitutes i by three partsc'=ic1+ic2+ic3：
Wherein Part I is fundamental wave sine circulation：
i c 1 = - U d θ M 2 ( L 1 + L 2 ) w c s i n ( w s t )
Wherein described UdFor the voltage of DC side, M is modulation ratio, and module of the parallel module for shunt chopper, including 1 He of module Module 2, the constant module of carrier phase are referred to as module 1, and the module that carrier phase is conditioned is referred to as module 2；L1Electricity for module 1 Inductance value, L2Inductance value for module 2；wcFor carrier angular frequencies, wsFor the angular frequency of fundamental wave, t is the time；
Part II is triangular wave circulation that frequency is three times fundamental frequency：
i c 2 = - 3 U d θMw s 4 π ( L 1 + L 2 ) w c ( t - 2 k 1 π 3 w s ) , t ∈ [ 2 k 1 π 3 w s - π 6 w s , 2 k 1 π 3 w s + π 6 w s ]
i c 2 = 3 U d θMw s 4 π ( L 1 + L 2 ) w c ( t - π 3 w s - 2 k 1 π 3 w s ) , t ∈ [ 2 k 1 π 3 w s + π 6 w s , 2 k 1 π 3 w s + π 2 w s ]
Wherein described k1For integer；
Part III is that waveform is approximately square wave, circulation of the frequency for switching frequency：
i c 3 = U d θ ( L 1 + L 2 ) w c
Each several part circulation is carried out to be added after Fourier decomposition and is obtained circulation expression formula and is：
i c = - U d θ 2 ( L 1 + L 2 ) w c - U d θ ( L 1 + L 2 ) w c Σ k = 1 ∞ 2 k π s i n ( k 2 π ( 1 - M s i n ( w s t ) ) coskw c t )
By to circulation expression formula ic' be analyzed, the circulation for obtaining the parallelly connected reverse converter system of consideration carrier phase difference has spy Levy：The circulation size of each frequency component and phase difference θ, DC voltage UdIt is directly proportional, with loop circuit impedance L1+L2And carrier angular frequencies wcIt is inversely proportional to；
Each several part circulation is added after carrying out Fourier decomposition and obtains circulation icBy DC component and carrier frequency and its friendship of the frequency again Flow component is constituted, and the size of circulation is directly proportional to carrier phase difference θ, arcless breaking inverter system circulation and parallel module Between carrier phase difference be directly proportional.
3. a kind of arcless breaking inverter loop current suppressing method according to claim 1 and 2, it is characterised in that：Institute The detailed process for stating open loop scan method in step 2 is：
Step 2 one：Start inverter module in parallel, i.e. module 1 and module 2；
Module 1 and module 2 are independent control, start when different, and therefore carrier wave is asynchronous, with phase difference；
Step 2 two：The carrier phase of holding module 1 is constant, and the carrier phase of mobile module 2, until the carrier phase of module 2 180 degree is differed with its raw carrier phase, records the waveform of circulation in carrier phase moving process；
Wherein, carrier phase movement is moved for constant speed, during the carrier phase of module 2 moves 180 degree, module 1 and mould The carrier phase difference of block 2 becomes big again with mobile first the diminishing of carrier phase；
The impact of carrier phase difference between parallel module to arcless breaking inverter system circulation is obtained according to step one, During carrier phase difference changes, system circulation first diminished and become big again with same Long-term change trend, and this process is referred to as sweeping Retouch；
Step 2 three：Find out the corresponding carrier phase amount of movement of minimum carrier phase difference in the scan period, one scanning Process of the cycle for the carrier phase movement 180 degree of module 2；
After collection circulation value, calculate the variance of common n circulation value that the instance sample and sampling for n-1 time before the moment obtains with Quadratic sum, finds n circulation value variance and quadratic sum minimum moment, i.e. carrier phase difference minimum moment according to bubbling method； By translational speed and the carrier phase difference minimal instant of 2 carrier phase of module, corresponding carrier phase amount of movement is calculated；
Step 2 four：Scan N number of cycle, 2 two to step 2 three of repeat step；Wherein N is the integer more than 1；
Step 2 five：Calculate the corresponding carrier phase amount of movement mean value of circulation minimal instant that N number of scan period obtains；
Step 2 six：After N number of intermittent scanning terminates, by the carrier phase of module 2 on the basis of its raw carrier phase, move Move calculated carrier phase amount of movement mean value.
4. a kind of arcless breaking inverter loop current suppressing method according to claim 3, it is characterised in that：The step In rapid two, the detailed process of closed loop control method is：
Step 2 (1)：Start inverter module in parallel, i.e. module 1 and module 2；
Module 1 and module 2 are independent control, start when different, and therefore carrier wave is asynchronous, with phase difference；
Step 2 (2)：Acquisition system circulation, signal is through carrier phase adjuster；The carrier phase adjuster is P adjusters Or pi regulator；
For carrier phase adjuster, circulation set-point are ic_ref, the absolute value for the circulation for collecting are input into, are output as carrying Wave phase amount of movement；
Step 2 (3)：The carrier phase amount of movement that carrier phase adjuster is exported is fed back to module 2, the carrier wave of mobile module 2 Phase place；
When carrier phase adjuster selects P adjusters, the absolute value signal of circulation is compared with set-point ic_ref, if difference is Just, outgoing carrier phase shift momentum is on the occasion of then the carrier phase of module 2 is moved to positive direction, and carrier phase difference reduces；If poor It is negative to be worth, and outgoing carrier phase shift momentum is negative value, then the carrier phase of module 2 is moved to negative direction, and carrier phase difference increases.
CN201611205390.1A 2016-12-26 2016-12-26 A kind of arcless breaking inverter loop current suppressing method Expired - Fee Related CN106505900B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611205390.1A CN106505900B (en) 2016-12-26 2016-12-26 A kind of arcless breaking inverter loop current suppressing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611205390.1A CN106505900B (en) 2016-12-26 2016-12-26 A kind of arcless breaking inverter loop current suppressing method

Publications (2)

Publication Number Publication Date
CN106505900A true CN106505900A (en) 2017-03-15
CN106505900B CN106505900B (en) 2019-01-08

Family

ID=58333752

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611205390.1A Expired - Fee Related CN106505900B (en) 2016-12-26 2016-12-26 A kind of arcless breaking inverter loop current suppressing method

Country Status (1)

Country Link
CN (1) CN106505900B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113067492A (en) * 2021-03-29 2021-07-02 内蒙古科技大学 Parallel inverter switching frequency circulation restraining method based on carrier phase compensation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010241262A (en) * 2009-04-06 2010-10-28 Toyota Motor Corp Driving device
CN104218836A (en) * 2013-06-05 2014-12-17 上海三菱电梯有限公司 Circulating current control method and device for parallel power converters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010241262A (en) * 2009-04-06 2010-10-28 Toyota Motor Corp Driving device
CN104218836A (en) * 2013-06-05 2014-12-17 上海三菱电梯有限公司 Circulating current control method and device for parallel power converters

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JIANBAO LIU等: "Analysis on Circulating Current of Parallel Inverter with SPWM Modulation for AC Motor Drive", 《PROCEEDINGS OF 2012 INTERNATIONAL CONFERENCE ON MODELLING, IDENTIFICATION AND CONTROL》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113067492A (en) * 2021-03-29 2021-07-02 内蒙古科技大学 Parallel inverter switching frequency circulation restraining method based on carrier phase compensation

Also Published As

Publication number Publication date
CN106505900B (en) 2019-01-08

Similar Documents

Publication Publication Date Title
CN101409507B (en) Method and apparatus for compensating dead zone of two-stage matrix converter based on carrier modulation
Forghani et al. Online wavelet transform-based control strategy for UPQC control system
CN102593862B (en) Photovoltaic grid-connected inverter and control method thereof
CN107994606A (en) Grid-connected inverter system method for analyzing stability under a kind of multi-frequency coupling factor Coexistence Situation
TWI409611B (en) Maximum power tracking method for solar cells
CN101697423B (en) Non-active disturbance maximum power tracking method in photovoltaic grid-connected inverting system
CN102710159B (en) The low harmony wave inversion controlling method of combination drive and modulating mode commutation circuit thereof
CN103887797A (en) Control method for limiting offset current of active power filter
CN106602600A (en) Single-loop control method for LC-type three-phase grid-connected inversion system
CN104821601A (en) Three-phase photovoltaic grid-connected inverter control device
CN107046388B (en) A kind of switched reluctance machines curren tracing control method, controller and speed-regulating system
CN103532170B (en) Fixed control method for switching period for grid-connected current hysteresis control algorithm
CN109802385A (en) The impedance modeling method of voltage source inverter
CN106505900A (en) A kind of arcless breaking inverter loop current suppressing method
CN111756266B (en) Multi-inverter parallel common mode circulation suppression method based on decentralized control
CN107565564A (en) Active Power Filter-APF and its quick composite control method based on quick Repetitive controller
CN102095932B (en) Detection method of voltage phase at access point of photovoltaic inverter
CN103885522A (en) Maximum power tracking method based on direct-current bus voltage control
CN105322818A (en) Control method of three-phase PWM (pulse width modulation) rectification based on novel model prediction control
CN106505621B (en) Inverter and its control method and device
CN106372369B (en) The instantaneous calculation method detected for inverter output direct-current component, harmonic component
CN109150064A (en) A kind of cascade SVG speed-regulating system dead time effect pulsewidth bilateral adjustment compensation method based on zero current region detection
CN103532128A (en) Proportional integral quasi-resonance control method for photovoltaic power generation system in direct-current microgrid
CN104333040B (en) Cascading type photovoltaic grid-connecting system based on improved dead-beat control method
CN103078348A (en) No-signal interconnection line parallel-connection three-phase inverter and control method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190108

Termination date: 20211226

CF01 Termination of patent right due to non-payment of annual fee